A weather station in the Himalayas is mysteriously destroyed. When an expedition is sent to investigate, they find that giant alien humanoid yetis, who are intent on melting the polar ice caps in order to conquer Earth, are responsible. Will the heroes be able to travel to the abominable aliens' Jovian home base to destroy their race once and for all? Italian sci-fi tale stars Giacomo Rossi-Stuart, Ombretta Colli, and Renato Baldini. AKA: "Gamma I Quadrilogy Vol. 4." 90 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.